光催化
罗丹明B
光降解
亚甲蓝
材料科学
光化学
辐照
可见光谱
吸附
核化学
化学
纳米技术
光电子学
催化作用
有机化学
物理
核物理学
作者
Yan Zhang,Anran Sun,Meiyu Xiong,Daniel K. Macharia,Jianshe Liu,Zhigang Chen,Maoquang Li,Lisha Zhang
标识
DOI:10.1016/j.cej.2021.129019
摘要
Fabricating p-n junctions is an effective strategy to broaden the photoabsorption range and promote electron-hole separation of semiconductor photocatalysts. However, most of the p-n junctions are powder-shaped. Herein, TiO2/BiOI as the model of the p-n junction was applied to be fixed on carbon fiber (CF) to fabricate weavable CF/TiO2/BiOI bundles, which shows strong and broad-spectrum photoabsorption in 200–800 nm. Besides, these bundles were further weaved into cloth (0.1 g, 4 × 4 cm2), which exhibits superior adsorption and photodegradation efficiency for various pollutants with visible (Vis) or UV–Vis light irradiation. The obtained CF/TiO2/BiOI cloth can efficiently remove 99.2% methylene blue (MB), 100% rhodamine B (RhB), 100% tetracycline (TC), 97.1% ciprofloxacin (CIP) and 98.9% levofloxacin (LVFX) in 80 min under UV–vis light irradiation, which is higher than that under Vis (91.3% MB, 95.7% RhB, 90.3% TC, 92.7% CIP and 93.8% LVFX) light irradiation. After five cycles, CF/TiO2/BiOI cloth still retains an excellent photocatalytic activity for LVFX degradation (92.1%) under UV–vis irradiation with an easy reusing process. This study provides some insights into the fabrication of reusable macroscopical photocatalysts with high efficiency for environmental purification.
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